CODE EXAMPLE FOR C

rl_replace_line

/* Replace the current line buffer contents with TEXT.  If CLEAR_UNDO is
 non-zero, we free the current undo list. */	
void	rl_replace_line (const char *text, int clear_undo)
{
	int len;
	len = strlen (text);
    if (len >= rl_line_buffer_len)
		rl_extend_line_buffer (len);
	strcpy (rl_line_buffer, text);
	rl_end = len;
	if (clear_undo)
		rl_free_undo_list ();
	_rl_fix_point (1);
}